This is nice! Like zachary578 said, the layers all mesh very well together during the instrumental portions. Sometimes the drums fall a little flat though, maybe try layering some different snares during fills? As of now the whole thing feels a little disjoint with some of the breaks, but I see that you're seeking vocalists to fill those in, so I wish you the best of luck with that!
Overall, I think this is pretty solid. Keep up the good work!